Maternity belt



FIG. 1 is a front view showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a front view thereof, shown in an unfolded configuration; and,

FIG. 4 is a rear view thereof, shown in an unfolded configuration.

The broken lines in the figures illustrate portions of the maternity belt that form no part of the claimed design. 

CLAIM The ornamental design for a maternity belt, as shown and described. 